Wrench or spanner



T. J. PRYOR. WRENCH 0R SPANNER. APPLICATION FlLED'lULY I5, 1921.

Patented Feb. 21, 1922.

THOMAS JAMES PRYOB, or sTANTHoRrE, ennnnsmnn, AnsrRALIA.

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WRENCH 0R SPANNER.

I,et(l7,577.

To all to from. it may concern Be it known that I, THOMAS JAMEs PnYon, subject of the King of Great Britain, residing at Stanthorpe, in the State of Queensland, Commonwealth of Australia, have invented certain new and useful Improvements in -Wrenches or Spanners, (for which I have filed application in the Commonwealth of Australia, No. 16425 of (5th July, 1920, by Archie Robert Gordon as assignee,) of which the following is a specification.

This invention relates to wrenches or spanners, the object being to provide means whereby it is possible to use the device in gripping round, square, or other surfaces, such as pipes, nuts, and other articles. It is applicable to either fixed or shifting wrenches or spanners and by its application it is possible to obtain a much better grip than ispossible with such devices at present on the market.

In carrying out this invention I make the wrench of two members pivoted together.

. One member is arovided with a head which may be fixed or movable, in the latter case suitable means being provided for moving such head), and a projection a suit-able distance therefrom. This projection is on the side of the member and has an inclined itace, facing the head. To the short arm of the other member is pivoted a jaw having the back thereof inclined similarly tothat of, and slid-able against, the projection on the other member, while the face is parallel, or approximately so, to the face of the head.

The pivot oi the two members may be fixed or movable. In the latter case the projection is also movable, the relation between the pivot and the face of the projection being maintained.

In order that my invention may be better understood I will now describe it with the aid of the accompanying drawings, in which Fig. 1 is a side elevation of my invention. Fig. 2 is a part view showing the jaw par-- tially open.

Fig. 3 is a side elevation of an alternative arrangement.

The wrench consists of the two members A B. Themember A, as shown in Fig. 1, has a movable head C, which is moved in the usual Way as by the nut D. Adjacent to the head end of the member A is a projection E, having an inclined face F. To this projec- Specification of Letters Patent. 4 Pat -M Q F 2 1922 Application filed July 15,

1921. Serial No. 484,985.

tion E the other member B is pivoted, such member being preferably of channel or U section at the grip portion, and formed so as to straddle the member A at the pivot G.

To the short arm H of the member B a wedge piece or jaw J is articulated. The working face K is parallel to the working "lace of the head, and the rear of the j aw is mclined similarly to that of the projection E. The spring I1 may be fitted in order to keep the members normally apart.

In the modification shown in Fig. 2 the -member B is pivoted at G to the sleeve M formed with the projection E. This sleeve M is secured in the desired position by a pin. N, which may be passed through the hole P therein and either of the holes Q in the member A. v

In carrying out my invention I may vary the constructional details and vary the 01 mation of the various parts of the wrench, so long as the essential features are retained.

The operation of my wrench is as follows: lVith the jaw J moved down the incline F, the position of the head C, as in the case of Fig. l, or the sleeve M and projection E, as in Fig. 2, is first adjusted according to the size of the article to be gripped. Then, when in place, the grip portion of the members A B are brought together, causing the wedge shaped j aw J to slide up the inclined face F and thus tightly wedge the article between the jaw J and the head C.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is In an improved wrench or spanner, a member having a head adjustable as to position, there being an inclined faced projection onsaid member, a second member pivoted to said first mentioned member. a wedge shaped jaw articulated to the end of said second mentioned member and arranged to operate between said head and said inclined face and against said face, as and tor the purposes herein set forth and as illustrated in the ac companying drawings.

In testimony whereof I affix my signature in the presence of two witnesses.

THOMAS JAMES PRYOR Witnesses:

M, E. BENzIEs, M. A. MoIN'rosH. 

